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Alona [7]
1 year ago
15

Now assume that the boat is subject to a drag force fd due to water resistance. is the component of the total momentum of the sy

stem parallel to the direction of motion still conserved?
Physics
2 answers:
gogolik [260]1 year ago
6 0

No

<h2>Further Explanation </h2>

The law of conservation of momentum states that "if there is no external force acting on the system, then the total momentum just before is equal to the total momentum after the collision". when using this equation, we must pay attention to the direction of the speed of each object.

The law of conservation of momentum is one of the basic laws in physics. This law states that "the total momentum of two objects before the collision is the same after a collision". This statement implies that the total momentum value when objects collide is constant or unchanged. To understand this law, we can begin by understanding Newton's Third Law of Action and Reaction.

The force acting on each colliding object occurs over a period of time. Regardless of the length of time the force contact occurs, this time interval is the same for object 1 and object 2. This means that the time interval between the workings of the forces from object 1 to object 2 is the same as the time interval for the workforce of object 2 to object 1.

As a consequence of the forces acting on the two objects are equal/opposite direction and the time interval between the occurrence of the force is also the same, then the impulse that occurs on the two objects is the same value and opposite direction.

From the theory of impulse-momentum change, that the impulse that occurs in an object is the same as its momentum change. Thus, because every object experiences an impulse that is equally large and opposite in direction, then logically each object also experiences changes in momentum that are as large and opposite.

Learn more

 The law of conservation of momentum brainly.com/question/3262217

Details

Grade:  High School

Subject:  Physics

keywords: Momentum, impulse.

DochEvi [55]1 year ago
4 0
Based on the given details with this question, I can say that the direction of motion is not conserved. This is because the boat is subjected to an external force because of water resistance. So, the answer for this question would be NO.
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Answer:

<em>The purpose of an inclinded plane is to make easier to move objects to a certain height.</em>

The technology behind this is about the Work you need to use to move the object upwards. Basically, when we use an inclined plane, we are splitting the net force, making easier to move. All this means, the force needed to move the objecto up will be lower, due to the inclined plane.

So, if the force needed is lower, then the work is also lower, because the work done is defined as the product between the force applied and the distance traveled.

<em>In addition, if we have a longer inclined plane, that means the force needed is even lower,</em> beacuse the distance is increased, but the Work is the same, because it only depends on the initial and final point.

Therefore, in this case, the work would remain the same and the mechanical advantage would increase. As we said before, the work needed will be the same despite the force decreases, because the distance increases, remaining the work as a constant. And the mechanical advantage increases, because it's easier to move if the inclined plane is longer.

3 0
2 years ago
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Lexy used the formula shown to calculate the force of gravity on a space shuttle. Fg = G What does 3 × 105 kg represent? the dif
STALIN [3.7K]
<h2>Answer:</h2>

<u>This term shows the </u><u>mass of the space shuttle</u>

<h2>Explanation:</h2>

We know that the mass of the Earth is 5.972 × 10^24 kg. Similarly the sum of  mass of earth and the mass of shuttle must be a greater number as compared to the number given. It simply means that the mass of earth is itself 5.972 × 10^24 kg and the value given is 3 × 105 kg so it is obvious that if was the sum then it must be greater than the mass of earth. Therefore we can say that this not the mass of earth, neither the sum of mass of earth and shuttle, but this is only the mass of space shuttle which is the last multiple choice.

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2 years ago
A car is traveling at 20 meters/second and is brought to rest by applying brakes over a period of 4 seconds. What is its average
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 (u) = 20 m/s 
(v) = 0 m/s 
<span> (t) = 4 s 
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<span>0 = 20 + a(4) 

</span><span>4 x a = -20 
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so, the answer is <span>-5 m/s^2. or -5 meter per second</span>
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2 years ago
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12*8A hollow steel ball weighing 4 pounds is suspended from a spring. This stretches the spring 13 feet. The ball is started in
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Answer:

See attached pictures.

Explanation:

See attachments for explanation.

6 0
2 years ago
The equilibrium fraction of lattice sites that are vacant in silver (Ag) at 600°C is 1 × 10-6. Calculate the number of vacancies
algol [13]

Answer :

The number of vacancies (per meter cube) = 5.778 × 10^22/m^3.

Explanation:

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Converting to g/m^3,

= 10.35 g/cm^3 × 10^6cm^3/m^3

= 10.35 × 10^6 g/m^3

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Where,

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Da = Density of silver

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The number of vacancies (per meter cube) = 5.778 × 10^28 × 1 × 10^-6

= 5.778 × 10^22/m^3.

6 0
2 years ago
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